TIdThreadWithTask - Thread created for the scheduler, or Nil when a thread cannot be created.

NewThread is an overridden TIdThreadWithTask function used to create and initialize the executable task for a yarn managed by the thread-based scheduler. 

The return value for the method is a TIdThreadWithTask instance that represents the thread created for the client connection executable task in the scheduler, or Nil when a thread cannot be created. 

NewThread calls the inherited NewThread method to determine the thread priority and the maximum number of threads allowed in the thread-based scheduler. NewThread also sets the StopMode value in the thread instance to Suspend (rather than Terminate) which allows a stopped thread to be returned to the internal thread pool for subsequent use. 

NewThread is used in the AcquireYarn method when an executable thread is needed for one of the ActiveYarns managed by the scheduler. 

Use StartYarn to begin execution of the thread for a client connections' executable task. 

Use TerminateYarn to halt execution of the thread for a client connections' executable task.

TIdThreadWithTask 

MaxThreads 

ActiveYarns 

ThreadPriority 

AcquireYarn 

StartYarn 

TerminateYarn 

TIdYarnOfThread 

EIdSchedulerMaxThreadsExceeded 

RSchedMaxThreadEx